4912716
Injector Cup
Cummins®

The Cummins Injector Cup, identified by part number 4912716, is a component integral to the fuel injection system of heavy-duty trucks. Its role is to facilitate the proper functioning of the fuel injector by maintaining fuel pressure and ensuring a secure seal. The Injector Cup is significant in the operation of heavy-duty trucks as it contributes to the overall efficiency and reliability of the engine ¹.

Purpose and Function

This Cummins part plays a role in the fuel injection system by providing a seal for the fuel injector within the cylinder head. This seal is vital for maintaining fuel pressure and preventing fuel leaks. By ensuring that fuel is delivered at the correct pressure and without leakage, the Injector Cup contributes to the efficient combustion process, which is fundamental to the engine’s performance ².

Key Features

The Injector Cup is designed with specific characteristics that enhance its functionality and durability. Crafted from high-quality materials, it exhibits resistance to wear and corrosion, which are common challenges in the harsh environment of a diesel engine. Its precision engineering ensures a tight fit within the cylinder head, which is crucial for maintaining the integrity of the fuel system. The design of this part also allows for easy installation and replacement, which is beneficial for maintenance purposes ³.

Benefits

Utilizing the Cummins Injector Cup offers several advantages. It contributes to improved engine performance by ensuring that fuel is delivered efficiently to the combustion chamber. This efficiency can lead to enhanced fuel economy, as the engine operates more effectively. Additionally, the secure seal provided by the Injector Cup reduces the risk of fuel leaks, which can be a safety hazard and lead to engine damage if not addressed promptly ⁴.

Installation Process

Proper installation of the Cummins Injector Cup is important for its function and the engine’s performance. The process involves several steps: First, the cylinder head must be clean and free of debris. The Injector Cup should then be positioned correctly within the cylinder head, ensuring that it is aligned with the fuel injector. It is important to follow the manufacturer’s torque specifications when tightening the injector to prevent damage to the cup or the injector itself. After installation, a pressure test may be conducted to verify the seal integrity.

Common Issues and Troubleshooting

Injector Cups may encounter issues such as wear, cracking, or improper seating, which can lead to fuel leaks or engine performance problems. If an issue is suspected, it is important to conduct a thorough inspection of the Injector Cup and the surrounding components. Common troubleshooting steps include checking for signs of wear or damage, ensuring proper seating of the cup, and verifying the integrity of the seal. If necessary, the Injector Cup should be replaced to restore the fuel system’s functionality.

Maintenance Tips

Regular maintenance of the Cummins Injector Cup is important for its longevity and optimal performance. This includes periodic inspection for signs of wear or damage, and cleaning the cup and surrounding areas to prevent the buildup of debris that could affect its function. It is also important to follow the manufacturer’s recommendations for replacement intervals, as worn Injector Cups can lead to decreased engine performance and increased risk of fuel leaks.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including diesel engines and components. With a history spanning over a century, Cummins has established a reputation for quality and innovation in the automotive industry. The company’s commitment to excellence is reflected in its products, which are designed to meet the demanding requirements of heavy-duty applications.

Cummins Injector Cup 4912716 Compatibility

The Cummins Injector Cup part number 4912716 is designed to fit seamlessly with several engine models, ensuring optimal performance and reliability. This part is crucial for maintaining the integrity of the fuel injection system, which is vital for the engine’s operation.

NH/NT 855 Engines

The Injector Cup 4912716 is specifically engineered to fit the NH/NT 855 engines. These engines are known for their robust design and high performance, making them a popular choice in various applications. The compatibility of this part with the NH/NT 855 engines ensures that the fuel injection system operates efficiently, contributing to the engine’s overall performance and longevity.

Grouping of Compatible Engines

While the primary focus is on the NH/NT 855 engines, it is important to note that the Injector Cup 4912716 may also be compatible with other Cummins engines within the same series or similar models. This compatibility is due to the standardized design and engineering principles that Cummins employs across its engine lineup.

By ensuring that the Injector Cup fits with the NH/NT 855 engines, Cummins also aims to provide a reliable solution for other engines that share similar design characteristics. This approach not only simplifies the maintenance process but also enhances the overall reliability of the engine systems.

Role of Part 4912716 Injector Cup in Engine Systems

The 4912716 Injector Cup is a vital component within the fuel injection system of an engine, specifically designed to enhance the performance and reliability of the injector. This part is integral to the proper functioning of the injector by ensuring a secure and leak-free seal between the injector and the cylinder head.

When integrated into the Barrel Plunger and Cup Kit, the 4912716 Injector Cup works in harmony with other components to maintain the integrity of the fuel delivery system. It facilitates the precise control of fuel injection timing and quantity, which is essential for optimal engine performance.

In conjunction with the Connecting Rod and Piston assembly, the Injector Cup plays a supportive role by ensuring that the fuel is delivered at the correct pressure and timing. This synchronization is key to the efficient combustion process, directly influencing the engine’s power output and fuel efficiency.

The Injector Cup is also a component of the Injector Kit Spares and Spare Parts Kit, providing a reliable replacement option for maintenance or repair scenarios. Its inclusion in these kits underscores the importance of having high-quality, compatible parts readily available to maintain engine performance.

Overall, the 4912716 Injector Cup is a fundamental part that contributes to the seamless operation of the fuel injection system, supporting the engine’s performance and longevity. Its role in ensuring a secure seal and facilitating precise fuel delivery is indispensable for the efficient functioning of modern engine systems.

Conclusion

The Cummins Injector Cup, part number 4912716, is a critical component in the fuel injection system of heavy-duty engines. Its design and functionality are tailored to enhance engine performance, ensure reliable fuel delivery, and maintain the integrity of the fuel system. Regular maintenance and proper installation are key to maximizing the benefits of this part, contributing to the overall efficiency and reliability of the engine.